Heat-insulated can.



L. R. STEEL.

HEAT INSULATED CAN.

APPLICATION IILED JULY 20, 1910.

1,67,071. Patented July 8, 1913.

2 SHEETS-SHBET 1.

a W w wuewtoz L. R. STEEL. HEAT INSULATED CAN. APPLICATION I'ILED JULY20, 1910.

1,067,0'?L Patented July 8,1913.

2 SHEETSSHEET 2.

LEONARD 1t. STEEL, or crewman bind.

nna'r-msunnriib can.

Specification of Il'ittEi-s mat. Application filed July 20, 1910. SerialNo. mp5s.

Patented July 8, 1913.

To all whom it may concern r Be it known that I, LEONARD R. S'rnEL, acitizen of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented new and useful Improvements inHeat-Insulated Cans, of which the following is aspecification.

This invention relates to im rovements in milk cans and has for oneofits objects the provision of a device of that kind including an outerand inner receptacle arranged in spaced relation and a double-walledvessel arranged in the space between said receptacles, saiddouble-walled receptacle preventing the milk within the inner receptaclefrom absorbing the heat of the atmosphere without the employment of arefrigerating medium.

With these and other objects in View, which will more fully hereinafterappear, the present invention consists in certain novel details ofconstruction and arrangement of parts, hereinafter fully described,illustrated in the accompanying drawings and more particularly pointedout in the appended claim; it being understood that various changes inthe form, proportion, size, and minor details of the device may bemade,within the scope of the appended claim, Without departing from thespirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, forming part of the specification ;Figure1 is a side elevation of the device. Fig.2 is a vertical sectional viewof the same. Fig. 3 is a detail side elevation of the vacuum vesselshowing the sections thereof in spaced relation. Fig. 4 is a similarView showing the vacuum receptacle connected with the mner receptacle.

Similar numerals of reference are employed to designate correspondingparts throughout.

As shown in Fig. l the can is arranged within a crate, the'said crateincluding a lower circular member 5 and an upper circular member 6, thesaid circular members being held in spaced relation by means of slats 7.Arranged at diametrically-opposite points on the upper circular section6 are a pair of plates, one of which is shown in Fig. 1 and designatedby the numeral 8, the said plate having an outwardly bulged centralportion 9. Thehandle is preferably formed of a single piece of stoutsteel wire or its equivalent bent into substantially a U-shape, L

ated

the opposite limbs of which are design by the numerals 10 and 11, thelimbs 10 11 terminating in bent portions 12 which are recelvedliytheopposite ends of the bent portion 9. ith this construction. it willbe seen that the handle is free to swing in a vertical plane when thecrate is in -an upright position.

and

The outer casing is shown to include a cir-.

cular bottom 14, from the periphery of which depends a flange 15. Thebody ortion of the outer receptacle is designate by the numeral 16 andis preferably formed of a slngle pieceof sheet metal rolled into theshape of a hollow cylinder. The lower end portion of the body 16receives the bottom, 1t s inner face bearing on the outer face of theflange 15. The bottom is secured in po-' sition and held braced by meansof circular bands 17 and 18, one of which is arranged on the lnnersurface of the flange 15 and the other on the outer surface at the lowerend of the body portion 16, the said bands and body portion 16 havingalining openings for the reception of rivets 19. The upper end of thebody portion 16 is provided with a dome-shaped head 20 having a centralopening from which rises a neck 21, the said neck 21 terminating in an.outwardly-flared mouth 22. Arranged. within the neck 21 is an inner neck23, the upper end portion of which is outwardly-flared as shown at 24and secured to the edge of the flared portion .22, the lower endportionof the inner neck 23 being interiorly screw-threaded as shown at25.- j

Thedouble-walled receptacle comprises a pair of sections designated bythe numerals 26 and 27. The lower of these sections 27 is somewhat lessin length than the upper section 26, and includes a bottom 28 andcircular side wall 29, the upper edge of the circular side wall 29 beingflexed outwardly, as shown at 30. The upper section 26 of thedouble-walled receptacle is contracted at its upper end to form a neck31, the said neck being externally screw-threaded. The lower end portionof the upper receptacle 26 is exteriorly screw-threaded as shown at 32,the said lower end portion bearin on the outwardly flexe'd portion 30 oft 'e lower section 27 and corresponding in diameter approximately to thediameter of the outwardly-flexed portion 30. A gasket 32 of any suitablenon-heat-conducting substance is arranged on the outwardly-flexedble-walled receptacle when the sections thereof are connected.Thecoupling ringis designated in general by the numeral 33. This memberis provided at one end with an inwardly extending flange 34, while itsopposite end is provided with a plurality of bendable pr0ng's35. Whenthe sections26 and 27 are arranged one upon the other, the

ring 33 is placed over the upper sect-ion, and

turned until the threads on its inner surface engage with the threads 32of the upper section 26 and thethreads 36 at the upper end of the lowersection 27 The flange 34 of the collar bears on the threaded portion 32of the upper section 26, while the prongs 35 are bendable intoengagement with the lower section 27 at a point below the threadedportion.30 of the latter.

The inner receptacle wall of the doublewalled receptacle comprises ahollow cyl inder, the bottom of which is designated by the numeral 37,and the side wall thereof which rises from the said bottom 37 beingdesignated by the numeral 38. The bottom 37 of the wall 38 is spacedfrom the bottom 28.

Arranged within the inner wall of the double-walled receptacle istheinner receptacle or lining designated by the numeral 39. This membermay be of glass, earthenware or any other analogous substance and issomewhat greater in length than the length of the inner wall, its upperend portion extending beyond the upper end portion of the neck 31 andbeing exteriorly screw-threaded, as shown at 32" to receive ascrew-threaded cap 33.

The double-walled receptacle is arranged within the outer casing, theexternal screwthreads of the neck 31 engaging with the screw-threadedportion 25 of the neck 23 of the outer receptacle. It will be seen nowby reference to Fig. 1 that when the double-' walled receptacle isarranged within the outer receptacle that a space will exist between thebottom of the outer receptacle and bottom 28 of the double-walledreceptacle, and arranged in the space between the said bottoms is abuffer disk 40. The bufler disk acts to absorb the shock which may betransmitted to the bottom of the can when handling the can in transit.This buffer may be constructed of cork or like elastic material.

Arranged in the s ace between the outer and inner walls of thedouble-walled receptacle is a cylinder 41, of cork, asbestos, or anyother non-heat-conducting substance.

non-heat conducting, substance is of thin sheet form. It is suitablyperforated and the'substance forms a guard to protect the receptacle 39should the walls of the .vacuum vessel become punctured.

The cover for the out r receptacle is shown to comprise a neck 42,'of asize to snugly fit within the inner neck 23 of the outer receptacle,said neck 42 terminating in a flared head 43 of a size to-snugly fitwithin Arranged in the flared portion'43 of the cover are a pair ofspaced disks 44 and 45, the compartment formed by said disks having theair exhausted therefrom and arranged in said compartment is a disk 46 ofcork, asbestos or other non-heat-conducting substance. In order tofurther prevent the absorption 0t" heat by the milk in the innerreceptacle, the inner surface of the inner wall of the double-walledreceptacle is coated with mercury or similar substance, this coatingacting as a reflector. Alining openings 50, 51 and 52 are formedin thewalls. 14 and 28 and in the cushion 40 by means of which air may beexhausted from the space defined by the walls of the double-walledreceptacle. These openings may be sealed in any suitable well knownmanner by a plug 53.

I claim:-

A can, comprising an outer vessel, an intermediate double-walledreceptacle including an upper section and a lower section, means fordetachably connecting the sectionstogether, the upper section having asubstantially cylinder like inner portion and an outer wall, the outerwall of the said upper section being spaced from the cylinderlikeportion, the cylinder-like portion being extended below the plane of theouter wall of the upper section, a heat ins'ulating element interposedbetween the cylinder-like portion and the outer wall of the uppersection and extended below the plane of the outer wall of the uppersection, whereby to be exposed when the upper and lower sections of thecan are disconnected from each other, an inner vessel removably mountedin the cylinder-like portion of said. doublewalled receptacle, a closurefor the inner vessel, and a closure for the outer vessel.

In testimony whereof I aliix my signature in presence of two witnesses.

LEONARD R. STEEL.

Witnesses:

MABEL LAWRENCE, JOHN D. LLOYD.

the flared portion 24 of the inner neck 23.

